Manufacturing method of display device and manufacturing apparatus of display device

Abstract

Provided is a manufacturing method of a display device in which, after a layered body including a resin layer, a TFT layer, and a light emitting element layer is formed on a substrate configured to form a plurality of display devices, the resin layer is irradiated with laser from a back face of the substrate and the substrate is peeled from the layered body using a laser peeling device. The manufacturing method of a display device includes acquiring optical information of the substrate that is peeled off, detecting each acquisition result of the plurality of display devices from each assigned position of the plurality of display devices relative to the substrate, and performing predetermined processing on the display device in a case that the acquisition result of the display device exceeds a threshold value.

The invention claimed is: 
     
       1. A manufacturing method of a display device in which, after a layered body including a resin layer, a TFT layer, and a light emitting element layer is formed on a substrate configured to form a plurality of display devices, the resin layer is irradiated with laser from a back face of the substrate and the substrate is peeled from the layered body using a laser peeling device, the manufacturing method of a display device comprising:
 acquiring optical information of the substrate that is peeled off; 
 detecting each acquisition result of the plurality of display devices from each assigned position of the plurality of display devices relative to the substrate; and 
 performing predetermined processing on the display device in a case that the acquisition result of the display device exceeds a threshold value. 
 
     
     
       2. The manufacturing method of a display device according to  claim 1 , wherein the optical information is transmittance. 
     
     
       3. The manufacturing method of a display device according to  claim 1 , wherein the optical information is reflectivity. 
     
     
       4. The manufacturing method of a display device according to  claim 1 , wherein the optical information is image data. 
     
     
       5. The manufacturing method of a display device according to  claim 1 , wherein, after the substrate has been peeled off, a lower face film is bonded to the resin layer, and the layered body and the lower face film are both divided to obtain the plurality of display devices. 
     
     
       6. The manufacturing method of a display device according to  claim 1 , wherein the predetermined processing includes an identifying step for specifying, in a case that an acquisition result exceeding a predetermined threshold value is detected, the display device indicating the acquisition result exceeding the threshold value from the plurality of display devices, and identifying that the specified display device is a defective product. 
     
     
       7. The manufacturing method of a display device according to  claim 6 , wherein the predetermined processing further includes a collecting step for collecting the display device identified as the defective product. 
     
     
       8. The manufacturing method of a display device according to  claim 6 , wherein the predetermined processing further includes notifying an external source that the acquisition result of the display device identified as the defective product exceeded the threshold value, and of information indicating the display device. 
     
     
       9. The manufacturing method of a display device according to  claim 1 , wherein the substrate is peeled from the layered body by inserting a knife from an end face of the layered body. 
     
     
       10. The manufacturing method of a display device according to  claim 1 , wherein the resin layer includes a polyimide. 
     
     
       11. The manufacturing method of a display device according to  claim 1 , wherein, in the acquiring the optical information, an inspection device measures the substrate that is peeled off from the layered body to acquire the optical information of the substrate that is peeled off from the layered body. 
     
     
       12. The manufacturing method of a display device according to  claim 1 , wherein, in the detecting each acquisition result of the plurality of display devices, each acquisition result of the plurality of display devices is detected based on the optical information acquired in the acquiring the optical information and each assigned position of the plurality of display devices relative to the substrate. 
     
     
       13. A manufacturing apparatus of a display device in which, after a layered body including a resin layer, a TFT layer, and a light emitting element layer is formed on a substrate configured to form a plurality of display devices, the resin layer is irradiated with laser from a back face of the substrate and the substrate is peeled from the layered body using a laser peeling device, the manufacturing apparatus of a display device being configured to:
 acquire optical information of the substrate that is peeled off, 
 detect each acquisition result of the plurality of display devices from each assigned position of the plurality of display devices relative to the substrate, and 
 perform predetermined processing on the display device in a case that the acquisition result of the display device exceeds a threshold value. 
 
     
     
       14. The manufacturing apparatus of the display device according to  claim 13 , further comprising an inspection device configured to measure the substrate that is peeled off from the layered body to acquire the optical information of the substrate that is peeled off from the layered body. 
     
     
       15. The manufacturing apparatus of the display device according to  claim 13 , further comprising an inspection device configured to detect each acquisition result of the plurality of display devices, based on the optical information acquired and each assigned position of the plurality of display devices relative to the substrate.